Finding the Fourth Proportional to 10,080.56, 15,123.72 and 3,928.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,080.56 : 15,123.72 = 3,928.88 : x
2. Step 2: Convert to fraction form
   10,080.56/15,123.72 = 3,928.88/x
3. Step 3: Cross multiply
   10,080.56x = 15,123.72 × 3,928.88
4. Step 4: Simplify right side
   10,080.56x = 59,419,281.03
5. Step 5: Solve for x
   x = 59,419,281.03/10,080.56
6. Step 6: Final answer
   x = 5,894.44